std::memcpy
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<tbody> </tbody>| Dclar dans l'en-tte <cstring>
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void* memcpy( void* dest, const void* src, std::size_t count ); |
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Copies count bytes from the object pointed to by src to the object pointed to by dest.
If the objects overlap, the behavior is undefined. If the objects are not trivially copyable (e.g. scalars, arrays, C-compatible structs), the behavior is undefined.
Paramtres
| dest | - | pointeur l'emplacement mmoire de la copie
Original: pointer to the memory location to copy to The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| src | - | pointeur l'emplacement de la mmoire copier
Original: pointer to the memory location to copy from The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
| count | - | nombre d'octets copier
Original: number of bytes to copy The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. |
Retourne la valeur
dest
Exemple
#include <iostream>
#include <cstring>
int main()
{
char source[] = "once upon a midnight dreary...";
char dest[4];
std::memcpy(dest, source, sizeof dest);
for (char c : dest) {
std::cout << c << '\n';
}
}
Rsultat :
o
n
c
e
Voir aussi
une mmoire tampon se dplace vers un autre Original: moves one buffer to another The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction) | |
(C++11) |
Copie une srie d'lments vers un nouvel emplacement Original: copies a range of elements to a new location The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction gnrique) |
copie une plage d'lments dans l'ordre inverse Original: copies a range of elements in backwards order The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (fonction gnrique) | |
(C++11) |
checks if a type is trivially copyable (classe gnrique) |
C documentation for memcpy
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